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    • 26. 发明授权
    • Process and apparatus for making foreshortened cellulsic structure
    • 制造缩短的脉冲结构的方法和装置
    • US6139686A
    • 2000-10-31
    • US994927
    • 1997-12-19
    • Paul Dennis TrokhanMark Ryan RichardsMichael Gomer Stelljes, Jr.
    • Paul Dennis TrokhanMark Ryan RichardsMichael Gomer Stelljes, Jr.
    • D21F5/00D21F11/00D21F11/14D21H27/00
    • D21F11/14D21F11/006D21F5/004
    • A process and an apparatus for making a foreshortened paper web are disclosed. A wet web disposed on a fluid-permeable papermaking fabric is being pressed between two parallel and mutually opposed first and second press surfaces, the first press surface contacting the web, and the second press surface contacting the fabric. In the continuous process, the press surfaces, the web and the fabric move in a machine direction. Under pressure, at least selected portions of the web become densified and adhered to the first press surface which can be treated with a creping adhesive. The first surface is heated to create a temperature differential between two surfaces. The temperature differential causes the water contained in the web to move from the web into the fabric, thereby drying the web. After the web is released from the pressure, the web is foreshortened either by creping or by transferring the web to a slower moving transfer fabric. Creping is performed with a creping doctor blade juxtaposed with the creping surface having the web adhered thereto. A creping adhesive may be deposited on the creping surface according to a predetermined pattern. The creping surface may comprise the first press surface. Optionally, the web may be calendered after being foreshortened.
    • 公开了一种制造缩短纸幅的方法和装置。 布置在流体渗透性造纸织物上的湿网被压在两个平行和相互对置的第一和第二挤压表面之间,第一压榨表面接触幅材,第二压榨表面与织物接触。 在连续过程中,压力表面,纤维网和织物在机器方向移动。 在压力下,幅材的至少选定部分变得致密化并粘附到可用起皱粘合剂处理的第一压制表面。 第一表面被加热以在两个表面之间产生温差。 温度差使得包含在幅材中的水从纸幅移动到织物中,从而干燥纸幅。 在幅材从压力释放之后,纤维网通过起皱或通过将幅材转移到较慢移动的转印织物而被缩短。 用起皱刮刀与起皱表面并排的起皱是将纤维网粘附在其上。 起皱粘合剂可以根据预定图案沉积在起皱表面上。 起皱表面可以包括第一压制表面。 可选地,网可以在被缩短之后被压延。